baber/WOPTO huggingface dataset:
Patent GB-1510717-A (GB)
Title: High voltage direct current transmission system
IPC: H02J1/00
Filed: 1975-09-10
Abstract: 1510717 High voltage DC transmission systems ASEA AB 10 Sept 1975 [11 Sept 1974] 37199/75 Heading H2F A high voltage D.C. transmission system comprises a rectifier station 1 and an inverter station 2 connected by a D.C. line 30, the rectifier station including uncontrolled valves and a circuit 11 for controlling the alternating voltage supplied to the valves, the circuit receiving a line voltage dependent output from a control circuit 7-10 and a line current dependent output from a control circuit 13-16. The line voltage is compared in a summation circuit 8 with a reference voltage Ud ref  derived from the A.C. output of the inverter station via a transformer 33 and a summation circuit 34, the voltage being reduced by the required voltage margin U marg  between the stations. The difference voltage from the circuit 8 is supplied to a summation circuit 27 along with the output of a circuit 26 which transmits only negative rates of change of voltage of a certain magnitude. The line current is measured by a device 13 and supplied to a summation circuit 14 where it is compared with a line voltage dependent reference current from a circuit 17 which receives a reference current J ref  from the inverter station. The difference current from the circuit 14 and a rate of change of current signal from a circuit 23 are supplied to a summation circuit 24. The outputs of the summation circuits 24, 27 are connected via regulators 15, 9 to the circuit 11 which supplies the greatest of the two outputs to an exciting device 6. In the event of a fault on the line, e.g. a short circuit, the greatest output is from the current control circuit which causes the exciting device 6 via a field winding 5 to reduce the output voltage of a generator 4.
Patent GB-1506486-A (GB)
Title: Tone arms including skating force compensating arrangements
IPC: G11B3/28
Filed: 1975-09-10
Abstract: 1506486 Pick-up arm SONY CORP 10 Sept 1975 [8 Oet 1974] 37298/75 Heading G5R A skating force compensator for a pick-up arm 1 comprises an arm 5 which rotates with the pick-up arm and supports a roller 6 which engages a cam surface 7 of a cam member 8 which with integral arm 9 is supported on a fixed pivot member 12 and is urged in a clockwise direction into contact with the roller by a weight 10. The slope of the cam varies over its length so that the arrangement provides a compensating force acting to rotate the pick-up arm outwardly which varies with the position of the pick-up arm stylus on a record.
Patent GB-1458456-A (GB)
Title: Catalytic exhaust devices for explosion engines
IPC: F01N13/02
Filed: 1974-08-28
Abstract: 1458456 Exhaust gas conversion AUTOMOBILES PEUGEOT and REGIE NATIONALE DES USINES RENAULT 28 Aug 1974 [3 Sept 1973] 37553/74 Heading B1F An exhaust device for an I.C. engine comprise an exhaust pipe 4, a catalytic converter 7a, 7b, a bypass pipe 8, and a three way valve 5, means for actuating the valve 5 comprising a source of suction e.g. engine intake 2, and means responsive to variation in a parameter representative of the conditions of operation of the converter e.g. temperature sensor 32, arranged to control the action of the suction source on valve 5, and a source of fluid under pressure e.g. air from pump 26 also arranged to actuate valve 5 and controlled by responsive means 32. Thus, when conditions of too high a temperature in reduction converter 7a are sensed by sensor 32, suction source 21 and compressed air line 25 are connected via valves 19 and 23 to opposite sides of valve piston 13 to act in conjunction and lower valve member 9 to seat 10 to allow exhaust gas to bypass 7a through conduit 8. The compressed air in line 25 is provided by pump 26, which also feeds air via conduit 28 to oxidation converter 7b.
Patent GB-523258-A (GB)
Title: Improvements in clutch actuating mechanism
IPC: F16H61/02
Filed: 1938-12-29
Abstract: 523,258. Variable-speed gearing; operating clutches. STEPHAN, E. Dec. 29, 1938, No. 37761. [Class 80 (ii)] A machine tool has an hydraulically-controlled variable - speed gear and a clutch operable, through a spring, by a manually-operable lever, a dash-pot being provided to retard clutch engagement. As shown in Fig. 1, a manuallyoperable lever 1 actuates a clutch shaft 5, controlling the two clutches 6 and 6a of a reversing gear, through springs 4 and 4a, the movement of the shaft 5 in one direction being retarded by a dash-pot 9. The latter may comprise a plunger 10, Fig. 5, adapted to be contacted by the end of the shaft 5 and urged upwards towards a stop 26 in an oil-containing cylinder 11 by a spring 24. Such upward movement is unretarded, oil passing from above to below the plunger through an orifice therein provided with a non-return valve 27, but downward movement of the plunger is retarded by the oil beneath it, such oil passing to the top through a restricted bore 14 in the plunger. The bore 14 may be adjustable. Alternatively, the plunger 10, Fig. 2, may be integral with the shaft 5 and the cylinder 11 be formed within an oil container 12. Movement of the plunger in either direction between the neutral position shown and its upper position is unretarded, due to the provision of orifices 15 and grooves 16 in the cylinder. Downward movement from the neutral position is, however, retarded by the passage of oil, drawn into the space beneath the plunger on the upward movement thereof through a passage 13 fitted with a non-return valve, through the restricted bore 14. In a modified form, the passage 13 is omitted. In the form shown in Fig. 4, the plunger 10 works in a liner 17 urged downwardly in the cylinder 11 by springs 20. In the neutral position shown, the liner 17 is in its lowest position, covering orifices 21 in the cylinder. If the plunger is moved upwards from the neutral position, it strikes a flange 22 on the liner and lifts the latter so as to uncover the orifices 21 and allow the oil beneath the plunger to escape. Downward movement of the plunger is now unretarded throughout its entire stroke. If upward movement is stopped, however, at the neutral position, in which orifices 18 in the liner remain covered by the plunger, subsequent downward movement of the plunger is retarded due to the restricted bore 14.
Patent GB-816708-A (GB)
Title: Improvements in or relating to photo-electric exposure meters or regulators
IPC: G03B7/06
Filed: 1956-12-11
Abstract: 816,708. Photo-electric exposure meters. VEB ZEISS IKON DRESDEN. Dec. 11, 1956 [May 16, 1956], No. 37815/56. Class 40 (3). In a photo-electric exposure meter having two measurement ranges a pointer 19 or 20 is brought into alignment with a meter pointer 21 by adjustment of an iris diaphragm control 1 and/or a picture frequency control 2 which are coupled together and to a disc 8 by differential gears 4-7, the disc 8 being connected by a lever 10 controlled by a cam-plate 9 to a disc 17 having stop surfaces 22, 23 to engage the pointers 19, 20. In the position shown the pointer 19 is operative, but when the disc 17 is moved anti-clockwise so that a cam 30 closes contacts 31, the meter is switched to its other range and the pointer 20 becomes operative. Fixed stops 26, 27 limit the movement of the pointers 19, 20 when inoperative.
Patent GB-877378-A (GB)
Title: Improvements in or relating to the handling of putty-like compositions suitable for use in sealing, caulking, glazing and like operations
Inventor: LEE GRAHAM RICHNOR
IPC: B65D63/10
Filed: 1956-12-13
Abstract: Putty-like compositions for use in assemblies comprising strips of the compositions releasably adhered to paper-like sheet (see Group XVII) may be made of the following ingredients, four formulae being given all containing asbestos fibre.  The ingredients may be, in addition to the fibre-High viscosity blown castor oil, Lime hardened rosin, French chalk, Aluminium stearate; or "Dutrex" 55 (Registered Trade Mark), Talc, Titanium white, Aluminium stearate, Calcium stearate; or Rubber, Paraffin oil, Agerite white, Stabelite Ester no. 10, Stearic acid, Titanium white, Whiting; or French chalk, Lithopone, Blown castor oil, Lime hardened rosin, "Varsol" Resin (Registered Trade Mark). Specifications 572,676 and 573,963 are referred to.
Patent GB-1429056-A (GB)
Title: Wire connecting apparatus
IPC: B23P21/00
Filed: 1973-08-13
Abstract: 1429056 Connecting wires to terminal pins GARDNER-DENVER CO 13 Aug 1973 [1 Feb 1973] 38199/73 Heading B3A An apparatus for connecting conductor wires to terminal pins 16 on a panel 12 comprises tools 42, 44, Fig. 1, movable in three perpendicular directions X, Y, Z to connect a conductor wire between spaced apart pins 16 and a dressing finger mechanism movable in three perpendicular directions so that it can be moved into a position to engage the wire during connecting, the mechanism comprising an arm 75, Fig. 3, carrying a finger 118 and connected to a shaft 72, Fig. 5, which is rotatable and translatable by a power actuator 96 so that the finger 118 can be moved from a retracted position into a working position where it engages the wire. Tools 42, 44 for helically wrapping the wire on the terminal pins 16 are mounted for movement in the Z direction in carriages 20, 22 which are movable in a vertical direction Y by rotatable screws 24, 26 and movable in a horizontal direction X by movable members 36. Housings 58, 60 carrying finger assemblies 62, 64 which engage the wire at desired points (17, 19) (Fig. 9, not shown) are mounted for movement towards the pin 16 on carriages 48, 50 which are positioned on top of the carriages 20, 22 and which are connected to tubular members 56 clampable in a desired vertical position by clamps (not shown). Each housing 58, 60 is interconnected with its carriage 48, 50 by a pivoted arm 140, Fig. 3, which is urged at one end by a piston 148 in a cylinder 150 in the carriage 48, 50 but which is prevented from pivoting by a notch 162 in the arm 140 being engaged by a pin 160 which is attached to a gear 156 engaging a gear 164 connected to a stepping motor 166. When the gear 156 is rotated in one direction by the motor 166, the arm 140 is allowed to rotate under the urging of the piston 148 to move the housing 58, 60 a controlled distance towards the pins 16. When the motor 166 is operated in the opposite direction, the housing. 58, 60 is moved by the pin 160 away from the pins 16. The tools 42, 44 may be moved in a similar manner. Each housing 58, 60 includes the shaft 72, Fig. 5, attached at one end to the arm 75 carrying a hollow finger 118 for receiving a pin 16 and attached at its other end to a cam 78 having a slot (80) (Fig. 6, not shown). A helical gear 76 on the shaft 72 is engaged by a gear rack 100 on a piston-rod 98. When the piston-rod 98 is moved to the left, rotation of the shaft 72 is initially prevented by engagement of the cam slot (80) with a projection 86 mounted on the housing 58, 60 so that the shaft 72 and attached finger arm 75 are moved axially until the cam 78 is aligned with a notch 88 in the projection 86. Thereafter the shaft 72 is free to rotate until a stop portion 83 on the cam 78 engages the projection 86 to position the arm 75 in the working position. The finger 118 is movable by a piston and cylinder assembly 110 into a sleeve (120) (Fig. 10, not shown) to slide the wire off the finger.
Patent GB-1042416-A (GB)
Title: Electric discharge lamps
IPC: H01J61/18
Filed: 1964-09-21
Abstract: 1,042,416. Metal-vapour discharge lamps. SYLVANIA ELECTRIC PRODUCTS Inc. Sept. 21, 1964 [Oct. 4, 1963], No. 38458/64. Heading H1D. The filling of a high pressure discharge lamp for the production of a continuous spectrum includes mercury in an amount such that it is completely vapourized at the operating temperature; iodine, in an atomic ratio compared with mercury of between 0 10 and 0À85; and either indium, thallium, or gallium, or a mixture of these elements, in a total amount in the range of 1À2x 10<SP>-7</SP> to 1À2 x 10<SP>-5</SP> gm. atoms per cm. of arc length. The filling also includes one of the rare gases, and may include sodium and cadmium. The discharge vessel 12, having auxiliary starting electrode 18, and main electrodes 13 and 14, one of which is connected to a ballast resistor 26, is supported in an outer envelope 2 by a wire harness 54 having crosspieces 56 and 57 and a pair of leaf springs 60 engaging the outer envelope. At least part of the mercury, and the indium, gallium, or thallium, and sodium present, may be introduced into the tube in the form of the iodide. In a described manufacturing process, the discharge vessel and the electrodes are vacuum baked, the vessel is flushed out with argon, residual electrode impurities are removed by a discharge in argon and subsequent evacuation, the fill is added, and further argon is added up to atmospheric pressure and then leaked out until a pressure of 23 torr is attained.
Patent GB-864748-A (GB)
Title: Improvements in or relating to fuel injectors
IPC: F04B49/24
Filed: 1959-11-13
Abstract: 864,748. Fuel injectors. ROVERE, V. Nov. 13, 1959 [Nov. 13, 1958], No. 38509/59. Class 75(1). [Also in Group XXVIII] A pump for supplying fuel to an injector nozzle 12c, Fig. 1, comprises a solenoid 4b whose armature 5 reciprocates a piston 2 which is a fluid-tight sliding fit within the working chamber 3 of the pump. When the solenoid is energised, the armature is driven towards the piston 2, compressing spring 6, moving piston 2 against the action of spring 10, compressing fuel in chamber 3 to open ball valve 11 and allow fuel to pass to the nozzle 12e. When the solenoid is deenergised, springs 11b, 10, 6 return the ball valve, piston and armature to the position shown. The chamber 3 is fed with fuel from a pipe 8 through a non-return valve 9, and a safety valve 14 is provided to ensure that pressure in chamber 3 does not exceed a predetermined magnitude. Screws 13, 14g enable adjustment of stroke of armature and setting of safety valve. In a modification, solenoid 4b is modified to be operated by A.C., Fig 1a (not shown).
Patent GB-824236-A (GB)
Title: Improvements in or relating to telephone apparatus
Inventor: MELLORS WALTER GEORGE
IPC: H04M1/76
Filed: 1956-09-12
Abstract: 824,236. Substation circuits. GENERAL ELECTRIC CO. Ltd. Dec. 12, 1957 [Sept. 12, 1956], No. 38554/57. Divided out of 824,235. Addition to 743,024. Class 40 (4). A substation circuit receives current from a central battery exchange for powering the transmitter 5. The voltage of this current is stabilized by a resistance network including a thermistor 8, is rectified by a bridge 9 of germanium diodes and supplies a transistor 4 amplifying speech currents supplied to the receiver 3. This circuit is also included in Specification 824,235 from which the present application is divided.
Patent GB-932614-A (GB)
Title: Improvements pertinent to electro-acoustic transducers, in particular to loud-speakers of high fidelity
IPC: H04R9/06
Filed: 1959-11-16
Abstract: 932,614. Loud-speakers; microphones; diaphragms. M. CESATI. Nov. 16; 1959 [Nov. 14, 1958], No. 38756/59. Class 40 (4). In a moving-coil loud-speaker or microphone of the type wherein the moving coil is secured to the diaphragm at a plurality of points, the polepieces are so shaped as to concentrate the magnetic flux in the locations occupied by the coil. As shown in Fig. 3, the coil is wound spirally on the diaphragm 50 and the polepieces have ridges of spiral configuration so that the flux is concentrated at the moving-coil conductor throughout its length. In the modification of Fig. 6 the coil consists of three groups of close spirals 61, 62, 63 and the polepieces have corresponding extensions. The groups of spirals 61, 62, 63 may, if desired, be fed by respective ones of a number of separate channels of various frequencies.
Patent GB-904088-A (GB)
Title: Improvements in or relating to soles for footwear
IPC: A43B13/12
Filed: 1959-11-16
Abstract: 904,088. Compound soles. ACLA-WERKE A.G. Nov. 16, 1959 [Nov. 15, 1958], No. 38820/59. Class 17 (2). A shoe sole of substantially uniform thickness comprises a leather portion 1 secured to a plastic portion 2, e.g. a polyester isocyanate addition product, which is thickened towards the toe part. The plastic toe-piece may be thickened by means of a curved or stepped joint 3, 5, as shown in Figs. 3 and 5 or by a gradual rectilinear taper (not shown). The plastic portion 2 may be superimposed over the whole of the leather portion or over the toe part only.
Patent GB-1440471-A (GB)
Title: Process for the manufacture of polyamide/polyamideacid copoly mers
IPC: C08J3/12
Filed: 1973-08-16
Abstract: 1440471 Laminates CIBA-GEIGY AG 16 Aug 1973 [25 Aug 1972] 38838/73 Heading B5N [Also in Division C3] Polyamide/polyamide acid copolymers of inherent viscosity 0À1 to 2À5 (0À5 wt. per cent in dimethylacetamide at 25 C.) are obtainable by reacting a polyamide acid of a tetracarboxycyclic compound and a diamine having an average M.W. of up to 20000 and containing at least 2 units of each reactant in each molecule with a dicarboxylic acid dichloride and a di-primary or secondary diamine. Reaction may be effected in solution or interfacially. Additives, e.g. pigments, fillers, carbon black, metal particles, lubricants, carbon, boron or glass fibres and blowing agents may be incorporated in the copolymer. Numerous conventional applications, e.g. coatings, laminates and moulding powders, and substrate materials associated therewith are mentioned. In specific examples the polyamide acid is prepared from (1 and 2) pyromellitic or (3) benzophenone tetracarboxylie dianhydride and diaminodiphenyl ether in molar ratios (1 and 3) 4 : 5 or (2) 5 : 4 and then reacted with isophthalic dichloride and (1 and 2) m-phenylene diamine or (3) diaminodiphenyl ether in molar ratios (1 and 3) 17 : 16 or (2) 16 : 17. The product of Example 1 can be converted to films, that of Example 2 used to form a glass-fibre laminate in Example 4 and that of Example 3 is compression moulded in Example 5. Reference is made to Specification 1,440,472 which relates to block copolymers of the same units but requires the polyamide blocks to consist of 8 to 100 units and the polymers claimed therein are disclaimed.
Patent GB-1070911-A (GB)
Title: Manufacture of hydrogen peroxide
IPC: C01B13/02
Filed: 1963-10-03
Abstract: Hydrogen peroxide is prepared by reacting a hydrogen sulphide-containing gas with an alkaline aqueous solution of a salt of an anthraquinone sulphonic acid, separating the resulting elemental sulphur, and oxidizing the reduced anthraquinone sulphonic acid salt.  The aqueous solution may contain 10-150 g./l. disodium anthraquinone-2,7-disulphonate brought to pH 9 by addition of up to 10 g./l. boric acid and an appropriate amount of sodium hydroxide. Excess H2S may be removed by CO2, S is filtered off, and the reduced solution is aerated. The H2O2 can be isolated directly, e.g. by distillation under sub-atmospheric pressure.  Alternatively, H2O2 can be converted to another peroxide by addition, before or after aeration, of a substance yielding a peroxide with H2O2, e.g. Ca(OH)2. H2O2 may be recovered from the other peroxide.  Otherwise H2O2 can be converted to oxygen by contact with a decomposition catalyst, e.g. a mixture of ferric oxide and manganese dioxide, or Ag or Cu. Reference has been directed by the Comptroller to the Specification 871,233.
Patent GB-908796-A (GB)
Title: Improvements connected with water softening appliances
IPC: C02F1/42
Filed: 1958-12-03
Abstract: 908,796. Water-softening. RAINSFORD & LYNES Ltd., and LYNES, R. K. March 3, 1960 [Dec. 3, 1958], No. 38996/58. Class 46. In a water softening device having a tap on the inlet side thereof, a T-piece is inserted between the tap and the device, bearing a sealable nipple through which regenerant solution can be passed when the water inlet tap is closed as shown in the Figure, between the device 7 and a tap 1 is the adaptor 13 bearing a nipple 11. The adaptor comprises a pillar 8 which, by attachment to a base board, supports the device. In normal use the nipple 11 is sealed by the cap 17 and water flows through the open tap 1 into the cylinder 7 During reactivation tap 1 is closed, nipple cap 17 is removed and brine admitted through the nipple into the container. The brine may be supplied from a device disclosed in Specification 908,795.
Patent GB-1298118-A (GB)
Title: Magnetic recording and reproducing device
IPC: G11B5/02
Filed: 1970-08-13
Abstract: 1298118 Magnetic recording/playback PIONEER ELECTRONIC CORP 13 Aug 1970 [15 Aug 1969] 39099/70 Heading G5R A high frequency oscillator 4 is used during a recording operation to supply both bias current to a magnetic recording head 3 and erase current to an erase head 6, and during a reproducing operation is used to supply control current to a semi-conducting Hall-Effect head 8. The output signal from the head 8 is filtered by a circuit 9 and demodulated by a circuit 10.
Patent GB-1425338-A (GB)
Title: Attachable needle assembly
IPC: A61M25/02
Filed: 1973-08-20
Abstract: 1425338 Surgical needles MPL Inc 20 Aug 1973 39189/73 Heading A5R A needle assembly for attachment to the body for use in infusion or as an electrode, comprises a needle 13 with means attaching it to a bandage 21 which is a flexible sheet 23 having one surface coated with pressure sensitive adhesive P.S.A., the bandage being foldable about a line in the direction of the needle axis to form a winged handle for the needle. Removable protective covering 25a- 25d may be provided for the adhesive surface being stiffer than the flexible sheet for easy removal. The needle may pierce the bandage at 23h and be attached to a flexible tube 15 also attached to the bandage by an adhesive strip 31. The needle is rotatable by manipulation of the relative heights of the wing edges. The bandage may be folded either first transversely of the needle, then longitudinally or vice versa. The needle may be secured to the adhesive side of the bandage being then irremovable without the bandage.
Patent GB-1061640-A (GB)
Title: Aerial
IPC: H01Q9/18
Filed: 1965-09-14
Abstract: 1,061,640. Aerials. INDUSTRIAL ELECTRONIC A/S. Sept. 14, 1965 [Sept. 15, 1964]. No. 39262/65. Heading H4A. In a coaxial type aerial an inner conductor extends successively through a hollow conductive cylinder forming an impedance transformer and into a hollow conductive cylinder forming a radiating element, said conductive cylinders being supported only in the vicinities of voltage nodes by a common cylindrical carrier member made of insulating material. As described, an inner conductor 16, Fig. 1, extends from a coaxial cable socket 18 in the closed end of a cylinder 14, the length of which may be #/4, where #= the wavelength at the mean frequency of operation. The free end of the conductor 16 projects into a cylinder 12, the length of which may be #/2. Insulating spacers 17 support the conductor 16 inside the cylinders 12, 14 which themselves fit inside an insulating cylinder 20, made, for example, of glass fibre reinforced plastics material. The outside diameters of the cylinders 12, 14 are reduced at portions 12a, 12b and 14a, respectively, so that they make contact only at portions 13, 15 near voltage nodes. The cylinder 20 is closed at its top end and is extended at its lower end 21 for fitting to a mast, and a shed 22 may also be provided, having holes for stays. In an alternative embodiment, the conductive cylinders 12, 14, Fig. 3 (not shown), are of uniform diameter and are held in the insulating cylinder 20 by means of short insulating cylinders 13a, 15a.